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Pressure-induced emission of cesium lead halide perovskite nanocrystals

Author

Listed:
  • Zhiwei Ma

    (Jilin University)

  • Zhun Liu

    (Jilin University)

  • Siyu Lu

    (Zhengzhou University)

  • Lingrui Wang

    (Jilin University)

  • Xiaolei Feng

    (University of Cambridge
    Center for High Pressure Science and Technology Advanced Research)

  • Dongwen Yang

    (Jilin University)

  • Kai Wang

    (Jilin University)

  • Guanjun Xiao

    (Jilin University)

  • Lijun Zhang

    (Jilin University
    Jilin University)

  • Simon A. T. Redfern

    (University of Cambridge
    Center for High Pressure Science and Technology Advanced Research)

  • Bo Zou

    (Jilin University)

Abstract

Metal halide perovskites (MHPs) are of great interest for optoelectronics because of their high quantum efficiency in solar cells and light-emitting devices. However, exploring an effective strategy to further improve their optical activities remains a considerable challenge. Here, we report that nanocrystals (NCs) of the initially nonfluorescent zero-dimensional (0D) cesium lead halide perovskite Cs4PbBr6 exhibit a distinct emission under a high pressure of 3.01 GPa. Subsequently, the emission intensity of Cs4PbBr6 NCs experiences a significant increase upon further compression. Joint experimental and theoretical analyses indicate that such pressure-induced emission (PIE) may be ascribed to the enhanced optical activity and the increased binding energy of self-trapped excitons upon compression. This phenomenon is a result of the large distortion of [PbBr6]4− octahedral motifs resulting from a structural phase transition. Our findings demonstrate that high pressure can be a robust tool to boost the photoluminescence efficiency and provide insights into the relationship between the structure and optical properties of 0D MHPs under extreme conditions.

Suggested Citation

  • Zhiwei Ma & Zhun Liu & Siyu Lu & Lingrui Wang & Xiaolei Feng & Dongwen Yang & Kai Wang & Guanjun Xiao & Lijun Zhang & Simon A. T. Redfern & Bo Zou, 2018. "Pressure-induced emission of cesium lead halide perovskite nanocrystals," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06840-8
    DOI: 10.1038/s41467-018-06840-8
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    Cited by:

    1. Tingting Yin & Hejin Yan & Ibrahim Abdelwahab & Yulia Lekina & Xujie Lü & Wenge Yang & Handong Sun & Kai Leng & Yongqing Cai & Ze Xiang Shen & Kian Ping Loh, 2023. "Pressure driven rotational isomerism in 2D hybrid perovskites," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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